Universal Containers (UC) has multi-cloud architecture in a single org. The Sales Cloud dev team is working in a Dev Pro sandbox (DevPro1) of delivering a release in three months. The business requirements from Service Cloud warrant a quicker release in four weeks, but need part of the Sales Cloud work that is completed in DevPro1. The decision of using a separate Dey Pro sandbox (DevPro2) is still pending. The DevPro1 was upgraded to preview for next salesforce major release two weeks ago.
What should an Architect recommend?